Distribution box fan model specifications and parameters

Distribution box fans vary by airflow capacity, static pressure, motor type, construction, and duct compatibility, with models like Air Excellent DB824, SQD-BOX, and Daikin MQFCI6 offering versatile options for HVAC systems.Air Excellent DB824The Air Excellent DB824 is designed for radial air distribution from a ventilation unit, minimizing pressure drop, fan energy use, and noise levels. Key specifications include 24 duct connections compatible with Aerfoam insulated ducts, internal air restrictor rings for precise airflow control, and flexible installation on ceilings or walls, either vertically or horizontally. Acoustic insulation blocks can be added to reduce sound transmission, and the unit supports multiple duct diameters via DBOX adaptors. Configuration is facilitated through the Aerflux ventilation configurator online .SQD-BOX Centrifugal Fan BoxThe SQD-BOX is a square, direct-drive centrifugal fan box suitable for clean or slightly dusty air. It features plug fans without housing, with wheel diameters ranging from 250 mm to 710 mm, airflow up to 27,000 m³/h, and static pressures up to 1400 Pa. The construction includes extruded aluminum frames, double-walled galvanized steel panels, and thermal/acoustic insulation. The fan wheel is backward-curved aluminum with a die-cast steel hub, statically and dynamically balanced per AMCA standards. Motors are three-phase, TEFC squirrel cage induction type, Class F, IP55, suitable for temperatures from -20°C to +50°C. Access panels allow easy maintenance .Daikin MQFCI6 Series Fan VAV BoxThe Daikin MQFCI6 series provides constant airflow with the fan operating during both heating and cooling. It comes in six casing sizes, with UL and CSA-certified electrical components. Features include an SCR solid-state fan speed controller, 1-inch fiberglass insulation, multi-quadrant averaging flow sensors for accurate airflow measurement, and quick-disconnect bulkhead fittings for easy servicing. The inlet panel is seamless for rigidity and reduced sound, and extra ports allow direct CFM measurement. The unit is designed for easy balancing and duct connection .Key Parameters to CompareAirflow Capacity: Up to 27,000 m³/h (SQD-BOX)Static Pressure: Up to 1400 Pa (SQD-BOX)Motor Type: Direct-drive, TEFC squirrel cage induction (SQD-BOX); SCR-controlled (Daikin MQFCI6)Construction: Aluminum frame, galvanized steel panels, thermal/acoustic insulationDuct Compatibility: Multiple diameters via adaptors (Air Excellent DB824)Temperature Range: -20°C to +50°C (SQD-BOX)Noise Control: Acoustic insulation options and rigid inlet panels These models provide flexibility for commercial and residential HVAC applications, allowing precise airflow control, energy efficiency, and reduced noise levels. Selection depends on required airflow, static pressure, installation constraints, and system integration needs.